Clutch.



lP. DIGNAN.

CLUTCH.

APPLICATION mso MAYla. 191s.

9, PmndSep-t. 25,191?,

@13 @Hoang/o www `shown in Fig, 1;.

i iinrrn1i sternsriaainnr onirica.;

rEneIfJA-L nIeNrAlvi-on :anwnome Assleivcnmon., Maca & co., a corner.

NnRsHir coMrosEn or JEssnIsIDoB/.Srnaius BERCY-S. srnansl AND HERBERT n.

STRAUS.

CLUTCH..

Specification of Letters Patent.A Patutedgph 25,` 1912? Original application fndivovemberfla,"1915, semaine/61,004. Diviaedfana Jthis appncationinea May 13.

191e. serial No. 97,377. i

To all whom Maag/.concern Be it known that I', FnRoivAnDIGNAN, a`

citizen of the Commonwealth ofAustralia,`

anda subject' ofthe Kingvof Great Britain, and a resident of the borough off Manhattan,

city, county, and, State lof New York, have invented certain new land useful Improvements in Clutches, ofi which-the followingis4 will, and to. this end I provide a clutchA mechanism forconnecting; a drivingmember to a driven member,- which mechanismymay be actuated tol operative or inoperative condition.

Another object is to provide means operative to transmit mechanical force, predetermined' in extent, from a driving; element to a driven element, andto this end I providea'transmission mechanism which may be set into operative condition` `and thereafter` automatically becomes inoperative.

Other and further objects and advantages will appear from the following' description, taken in connection with the accompanying drawings, forming' part of this specification, and willi be pointedl outin the claims.

In the accompanying` drawings, in which like reference characters indicate similar parte Figure 1 isa view of a clutch embodying` my invention, the `view showing certain parts in section and one of the plates of the clutch removed; f

Fig. 2v is aV sectional view of the device Fig. 3 is a partial sectional view on the lineB-B of Fig. 1.

In order to disclose my invention, I will describe. a preferred` embodiment thereof, comprising a clutch, adapted to be manually Iput into operative condition, and to be automatically rendered inoperative after a` predetermined extentI ofuoperation. The clutch herein disclosed is disclosed in my applicatien for a patent for' printing machines, il'ed l\l'ovember`Y 12, 1915,

most cases,- the driving' and driven members could" be reversed. Shaft 1` is `journaledl in the front plate 3 mounted inthe frame Attached'to the driving membeigyas by rivets 5, is a platel, 'which carries a cylindricalA flanged?. The `gear wheel 2 and"k theplate (S are Journaled upon the shaftl. Keyed to the shaft 1= by keys 10" are twoplates Sand'` 9: Positioned between plates 8 and 9 and mounted for rotation `up`on pins llextending-between said plates are transmission elements12i The pins 11` are arranged in a circle about the axis of the shaft 1. The elements 12 are proportioned sothat the distance between the centers of the pins 11 and the outer ends ofthe elements, which ends are arcuate, is greater thangthe distance betweenthe aXesof` thepins 11 and the inner face of the iiann'e 7.' Pinsrl?) are arranged in a circle about the axisof' the shaft 1, and mounted for rotation upon them are links 14,. s The outer ends of the links 14 are provided with slots 15,4and the inner ends of thel elements 12 are provided with slots 16. The inner ends ofthe elements 12`are formed withbifurcations 17, and the outer ends of the links are provided with tongues 18, which extend between the bifurcations 17. There are two rings 19, which are positioned on opposite sides of thetongues 18 and between said tongues and the bifurcations 17,

The rings 19 carry pins 20, which fit within tend to swing` the links 14 around their` pivots 13- in such a manner that the elements 12 'will be swung' into engagementl with the inner face of the flange 7. s

It will be seen that, if the driving member isrotated in the direction of the arrow and the elements are?v in engagement with the inner :face of the lianes 7, a jammingv ico action will voccur between the flange 7, links 12 and pins 11, and the driven member will be rotated. A reversal ofthe direction of movement of the driving member willV cause acessation ofthe jamming action and the driven member will no longer be rotated.

In order that the driving member, when it moves in the direction of the arrow, will not move thedriven member continuously,

one of the vlinks 12 isprovidedwith a pinl 23, and a pin 24 is Vcaused to move into the path of the pin 23 by the action of spring 25, so thatthe elements 12, whichare caused p i inner face of the flange ''.A The plate 9 is provided with ai slot 9',Y shown in Fig. 3, into which the pin 24 moves under the action of the'spring 25k when the slot is in the` properposition, so that the pin 24 will cooperate with the pin 23 mounted in the linkl2. It vwill .be seen that, if the parts are `in the yposition shown in the drawings and thepin 24 is drawn back against the pressure of the spring 25,' the elements 12 will come into engagement with the flange 7 and the shaft 1 will be driven; the spring 25 will cause the pin 24 to move back into the path of the pin 23, and, as soon as the driven member hasmade one rotation, the pin 23 will again strike against the pin 24, and the transmission elements 12 will be moved out of engagement with the flange 7 and the driven member will come to rest.

The pin 26 is iiXed in' the plate S to limit the rotation of that element 12 which carries `the pin 23. When the pin 23 strikes the pin 24, the inertia of the drivenparts carries forward the plates 8 and 9, so that the elements 12 are swung about their pivot pins 11.` The pin 26 limits the rotation of theelements 12, so that they. do not rotate so far that the pin 23 will slide past the pin 24,.

It, is apparentthat many variations,modi-l ications and adaptations; of my` device will occurto thoseskilled .in the art, and it is my intention that my invention shall be consideredto include such variations, adapta- 4 tions Vand modifications, and that it shall f i be defined only by the hereunto-appended claims, andnot limit-ed to the specific structure described for the purpose of disclosing it.

What I claim and desireto secure by Lets. vters Patent ofthe United States is the fol;

lowing:- l i i 1. In a device of the class described, a constantly-mov1ng member,a member to be driven thereby, a plurality of links pivoted to one `of said members, each pivot being nearer to theothenmember than to one end of its corresponding link, means tending to swing said end of said links into engagement with the other, member, one of said links having a projection i. thereonbetween its oorrespondingpivot'and the afore-mentioned end of the link, a stationary support, and a part mounted thereon and normally held in the path of saidprojection.f`

2. In a device oftheiclass described, a constantly-moving member, amember to -be driven, an element carried by one of said members and supported against movement A in a path substantially perpendicular Vto the path of movement of. an adjacent portion ofthe other of said inembersand rotatable about an. axis, ,said other member being nearer said, axis than one end ofsaid element, a stationary member Aand means mounted thereon for retarding the. motionin one direction `of that part of said element between said axis and saidend. .p

' 3.- In ,a.device.oi,thec1ass described, a transmission element comprising a sconstantlyfmovi-ng driving ring, a plate coaxial` therewith and adapted'to be driven therefrom, ali-nk pivoted to saidplate, the pivot being slightly nearer to the surface of said ring thanktoV one end v of said link,

therefrom, a link pivoted to said plate, the

pivot being slightly nearer tothe `surface of'said ring than to; one end of said link,

spring acting on 4`said link to swing said iirst-mentioned end into Contact with said ring, a housing for said element, and a pin mounted in said housing and movable into thepL th of that p art ofzthe link between said ring and said pivot.

`In testimony whereof, I have name to this speciiication.

Copies ofthis patent may be obtained for ve cents each, addressingj'the oiixmissioiierofiPatents.

4 1 Washington, D. C.

Signed mv PERCIvAii Dianna. fj 

